Predicate-argument Structure based Textual Entailment Recognition System of KYOTO Team for NTCIR9 RITE

We participated in Japanese tasks of RITE in NTCIR9 (team id: “KYOTO”). Our proposed method regards predicateargument structure as a basic unit of handling the meaning of text/hypothesis, and performs the matching between text and hypothesis. Our system first performs predicateargument structure analysis to both a text and a hypothesis. Then, we perform the matching between text and hypothesis. In matching text and hypothesis, wide-coverage relations between words/phrases such as synonym and is-a are utilized, which are automatically acquired from a dictionary, WebcorpusandWikipedia